best UCA length?

Discussion in '2005 - 2009 Specific Tech' started by autumn_again, Dec 27, 2008.

  1. autumn_again New Member

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    i have my Steeda adjustable UCA ready to install. what is the best length to put it to? i think steeda says 8.34 for performance, but i want to make sure cause i don't wanna install it and get worse wheel hop. my cars stock ride height.
  2. autumn_again New Member

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  3. hammeron New Member

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    it's a hard question to answer...

    essentially you are asking what the
    pinion angle should be, with a two
    piece drive shaft, aftermarket upper
    and lower control arms.

    i would probably start by measuring the
    current pinion angle, install the UCA, then
    set the pinion angle to match.

    i'm interested in what others have to say
    because i also, just installed the steeda
    adjustable UCA.
  4. autumn_again New Member

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    the only reason i ask, is because steedas directions say to do a .10th shorter then factory for performance. i'm not too worried about the car handling like a lincoln, i'd rather fix the wheel hop. tomorrow if i dont have a different answer i'll just go with the steedas 8.34 or whatever it is.
  5. hammeron New Member

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    sorry i couldn't give a definite answer, i
    just installed a one piece drive shaft along
    with the UCA and my setup is different.

    you can't go wrong with the steeda
    starting point.
  6. autumn_again New Member

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    what driveshaft did you install? i was going to order the shaftmasters one but i don't like the idea of an adapter plate.
  7. hammeron New Member

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    i went with a dynotech, it also
    has an aluminum adapter plate.

    since lethal and brenspeed both sell
    it, i figured it had to be ok.
  8. autumn_again New Member

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    just installed it, did the steeda recommendation of 8.36"

    my god. i didn't think that out too well before i placed the jack stands. and the exhaust was a pain in the ass.

    put the jack stands on the lca mounts. so when i broke the bolts loose the rear is just dropping forward in my way.so i had a jack under there on the pumpkin. couldn't get anything anywhere. + all mine and my dads tools are over my brothers house while we're building his 94 gt.

    took it for a test run, and laid rubber down all the way thru second, no hop. gunna test more tonight, gotta head to work.
  9. DarkFireGT Playing with my wife's really makes me want one.

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    You can't set it to a specific length. Every car will be different, especially depending upon your suspension and driveshaft setup.

    You need to get yourself a magnetic angle finder. Then you need to check your pinion angle. With stock driveshaft, you should be around -2*. For a one piece driveshaft, just a bit more.

    This video will show you how to do it.
    How to Change Pinion Angle on your S197 Mustang with BMR - Stang TV Forums

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